(countable) Something which brings dishonor; the cause of shame or reproach; great discredit

1853, Solomon Northup, Twelve Years a Slave

Practice and whipping were alike unavailing, and Epps, satisfied of it at last, swore I was a disgrace—that I was not fit to associate with a cotton-picking "nigger"—that I could not pick enough in a day to pay the trouble of weighing it,

His behaviour at the party was a total disgrace! He was leeching on all the ladies, and insulting the men